Valve



H. E. TOELLE Feb. s, 192.5.,v

VALVE rama m" 1935 1,989,722

UNITED STATES PATENT :OFFICE VALVE Herbert E. Toelle, Milwaukee, Wis.,assignor to Milwaukee Gas' Specialty Company, Milwaukee Wis., acorporation of Wisconsin Applicaties August 7, 1931, sei-u1 No. 555,698

11 owns, ici.' zii- 24) This invention relates to valves, and isparfurther opening ot the plug valve results in the ticularly concernedwith the type of valve used usual adjustment of the flow of gas.

for controlling the dow of gaseous fuel from a In order to acquaintthose skilled in the art gas supply pipe to the gas burner of theordinary with the details of construction and operation 5 domestic gasrange. of my valve, I will now describe it in detail, in 5 v Theinvention, in its broader aspects, is diconnection with the accompanyingdrawing, in 4 rected to providing a valvev adapted for use on a which:

gas range whichis ot simple' andrugged construc- Figure 1 is an axialvertical section, partially tion, and which is so constructed as toeliminate in elevation, lof a valve embodying the present l0 thepossibility of the valve being so nely set as invention; l0

' to permit of the burner fiame being accidentally Figure 2 is asectional view taken substantially extinguished. on the line 2-2 ofFigure 1, looking in the direc- The ordinary type of valve now in use,for the tion of the arrows; and purpose of controlling the flow of gasto a gas Figure 3 is a sectional view similar Vtoliguie 2,

burner comprises merely a rotating plunger with but showing the valve ina partially opened posil5 a gas passage therethrough which is rotatedinto tion. and out of alignment with the inlet and outlet Referring tothe drawing, in which like referopenings of the valve body. It ispossible to so ence numerals designate similar parts throughout adjustthis type of valve that the burner can be the several views, a valvebody for housing the opused as a Simmering burner. This adjustment,erative parts of my valve is indicated generally 20 however, is likelyto be so ne that any draft or by the reference numeral 1. This valvebody outside inuence will extinguish the burner, and has a nipplethrough which the inlet opening 2 the resultant escape 0f unbllrled gasis highly passes and which nipple is threaded as at 3, and isundesirable, both from a toxic standpoint, and as adapted to be securedto the usual type of gas a tire and explosion hazard. manifold or gassupply pipe, which is not shown 25 'I'he present invention is directedto a valve in the drawing. which is without these undesirable character-'me va1ve body 1 has the tapering circular istics, and which is sodesigned and constructed valve member 4 adapted to seat within theopenthat the possibility 0f occurrence of the c011- ine 5 in the valvebody. The valve member 4 is ditions referred to previously iseliminated. Also, o the usual plug type of valve, having the pas 30 thevalve of the present invention is adapted for sage 6 therein which 1Sadaptedkto be aligned with use without any associated safety devices oreutthe inlet opening 2 for passing gas from the inlet off devicesdesigned for the purpose of preventopening t0 the'outlet, opening 7, ingOW 0f gas after accidental extinguishing Valve d has an upwardlyprojecting stem 8,

of the ame. and a handle 9 is adapted to be secured thereon 35Specically, the present invention is directed in any we11 known manner,A stem portion 10 to a combination valve 0f the plus and 1101112815projects from the lower part of the valve memtype, the plug valve beingadapted, by means of .ber 4 and passes through a aange plate 11 sea camsurface, to so operate the poppet valve cured to the valve body 1 in anysuitable manner.

as to secure abrupt opening and closing of the The stem portion 10 oithe valve body 4 is 40 conduit to the valve body. After the poppet valvethreaded at -its outer end as shown at 12, and a has once been opened,adjustment of the flow of washer 13 is adapted to be' secured over thisgas is secured in the usual manner by rotation of threaded portion andheld in position by means the valve stem. The cam surface is so conofanut 14. A spring 15 isprovided betweenthe structed that, upon closingof the valve, in order flange plate 11 and the washer 13 for the purpose45 for the valve to act as a simmering burner, after of absorbing thetension stresses set up in the a safe minimum closing value has beenreached, valve stem 10 'and also to securely hold the valve 'any furtherclosing of the valve results in abrupt member 4 in position upon itsseat.

closing of the conduit, and no further iiow oi The valve body 1 has aninwardly projecting gas to the burner is possible. In the same manangeportion 16 adapted to form a. seat for a 50 ner, in opening the valve,there is a certain interpoppet valve 17. The poppet valve 17 controlsval of rotation of the control stem before the the passage of fuel fromoutlet chamber 7 to the conduit opens, but once the opening point haschamber 18 formed in the valve body 1. been reached, the valve isimmediately and ab- Threaded into the end ,of the chamber 18 is a ruptlyopened to a suitable minimum value and` flanged bushing 19 having arecessed portion 55 outlet, is threaded thereon, the nozzle tube 23being usually arranged to discharge into the feed pipe connected to theburner. vA spring 24 is positioned about the raised portion of thepoppet valve 17 and has its other end positioned in the recessed portion20 of the bushing 19,

. and against a shoulder in the bushing. This spring tends to 17. A c amprojection 26 carrledby and integral with, the poppet valve 17 isadapted to project into the outlet opening 7 of the valve body 1. Thecam projection 26 engages in a cutout segment 2 7 of the valve member 4,and is adapted normally close the poppet valve 'to be engaged by the camsurface 30 at the end of the cut-outsegment 27,' when the valve stem 8is rotated to open position.

The opening 6 in the valve member 4 com-- prises a circular portionwhich is provided at its outer extremities with a web member 28extending across ythe end of the opening centrally thereof. The webymember 28 is provided for the u ose of contact with cam rejection p rpmg p 'ple and reliable valve, adapted to allow only a 26 when the valveis rotated inorder to maintain the poppet" valve in open position as thevalve is rotated in full open position, that is, to position with thepassage 6 aligned with the inlet opening 2 and the outlet opening 7.

The cam surface 27 has the abutting portion 29 which is adapted to actas a stop for preventing further rotation of the valve in a clockwisedirection. However, this abutting portion 29 is not essential, inasmuchas the valve could be so constructed that it would operate when rotatedin either direction. For the purposes of the present disclosure,however, the valve is shown as being rotatable in one direction only.`

In the operation of my device, the valve when closed is in the'positlonshown in Figure 1. When it isA desired to admit gas to the burners of anordinary gas range, the handle 9 is rotated, causingV rotation of thevalve member 4. The,valve member 4 rotates through an anglesubstantially equivalent to the length of the cut-out segment 27, beforeany gas is admitted to the burner. As the cam surface 30 atvthe end ofthe cut-out segment 27 comes into'contact with the cam projection 26 itcams the projection 27 abruptly outwardly, and moves the poppet valve 17abruptly from its seat 16.

As shown in Figure 3, however, the valve member 4 has been rotatedthrough an angle which permits of the passages 6 being partially alignedwith the inlet opening 2 and the outlet opening 7 before the cam isengaged. This allows the gas to now into the opening 7 before the poppetvalve 17 is opened. .As the poppet valve 17 abruptly opens, dueto itscontact with the o utwardly projecting and relatively sharp cam surface30, the spring 21 'is compressed and gas flows by the valve seat 16 intothe secondary outlet opening 18 of the valve bcdy and thence through thenipple 22 tothe Venturi tube 23. Further rotation of the valve member 4operates only to permit the opening 6 to become more fully aligned withthe inlet opening 2 and outlet opening 7 of the valve body 1. 'I'he cammeniber, after being abruptly forced`outward1y by the cam end 30 of thecut-out segment 27, remains in this position during the remainder of theopening of the valve member 4 and so long i as the cut-outsegment is notmoved back into registration withthe cam projection 26. At the end ofthe opening 6 the cam 26 slides on the web portion 28 of the valvemember 4.`

In closing the valve, the opening 6 of the valve member 4 is graduallyrotated out of alignment until it reaches a position shown best-inFigure 3. This is the safe minimum closing position of the valve. Anyfurther rotation in a closing direction causes the cam memberv 26 toslide past the abutting portion 30 of the cam surface 27 and causes thepoppet valve 17 to be abruptly closed, due tothe stress present in thespring 21. No more gas is allowed to enter the burner after the poppetvalve has been closed. Thus it isv seen that the valve-can never be settoo low or opened insufliciently to maintain the flame at the burneruThe opening of the poppet valve is complete or not at all and the poppetvalve is not opened until the plug valve is opened sumciently tomaintain the desired minimum supply" Y through the valve. A

In the same manner, when the plug valve is set down too low to maintainthe desired minimum supply of gas to the burner, the poppet valve'automaticalLv closes the supply entirely.

Thus it can be seen that I have provided a simsafe minimum quantityofgas to flow therethrough, any quantity of gas less than the safe minimumquantity, which in prior types of valves has been the cause ofcriticism, being shutoff -into the grooved portion of the valve memberand the poppet valve closes, immediately shutting ofi! any gas flowingto the burner.

I do not intend to be limited to the precise details shown anddescribed, but only insofar as defined by the spirit and scope of theappended claims.

I claim:

l 1. In a fuel supply valve, a valve body having member controlling'saidoutlet and means for operating said second valve member after apredetermined'rotation of said first valve member has provided a safeminimum opening for ilow of fuel between said inlet and said outlet.

2. In a valve, a valve body having inlet and oitlet openings therein,rotatable valve means positioned between said openings, a cam surfacecarried by said valve means, a valve seat in said outlet opening, apoppet valve adapted to seat thereon and having a projecting cam member,closing of said rotatable valve causing'abrupt closing of said poppetvalve from full open position after a safe minimum closing position hasbeen exceeded by said rotatable valve.

3. IIn a valve, a valve body having inlet and outlet openings therein,rotatable valve means positioned between said openings, a cam surfacecarried by said valve means, a valve seat inj-'said outlet opening, apoppet valve adapted to seat until a safe minimum closing position hasbeen exceeded by said rotatable valve, said poppet valve being entirelyclosed upon am further closing rotation of-said rotatable valve. v

4. In a valve for a fuel supply line, a valve body having inlet andoutlet openings, arotatable valve positioned between said openings foraffording communication therebetween, a cam surface on said valve, avalve seat, a poppet valve seating thereon and having a projecting cammember, said first valve being rotatable4 to provide an opening for asafe minimum iiow of fuel through said valve before'said cam surfaceengages said cam member to open said poppet valve, and spring meanstending to close said poppet valve. L 5. In a valve, a valve body havinginlet and outlet openings, rotatable valve means in said body betweensaid openings, a cam surface on said valve means, a valve seat in saidoutlet opening, a poppet valve normally seating thereon, and a cammember carried by said poppet valve and engaged by said cam surface toprovide for movement of said poppet valve only to fully open or fullyclosed position upon rotation of said valve means.

6. In a valve, a valve body having inlet and outlet openings, rotatablevalve means Q between said opening a cam surface comprising a pluralityof concentric surfaces having a connecting portion extendingtherebetween formed on said valve means, a valve seat in said outletopening, a poppet valve normally seating thereon, and a cam memberextending from said poppet valve and engaging said cam surface, saidconnecting portion actuating said poppet valve from closed to fully openposition after a predetermined rotation of said valve means.

7. In av valve, a valve body having inlet and outlet openings, rotatablevalve means disposed between said openings, a cam surface on said valvemeans comprising a plurality of concentric surfaces having a connectingportion extending therebetween, a valve seat in said outlet opening, apoppet valve seating thereon, spring means tending to maintain saidpoppet valve closed, and a cam member extending from said poppet valveandensasinssaidcamsurfacesaidspringmeans cooperating with saidconcentric surfaces for preventing said poppet valve from remaining inany position intermediate its closed or fully open position.

I 8. In a fuel supply valve having inlet and outlet openings therein, avalvefor metering the flow of fuel through said openings, a second valveadapted to close said outlet opening to flow of.

fuel and adapted to be opened by said metering valve only after saidmetering valve is in position to allow a safe minimum ilow of fuelthrough said openings, and means for preventing said second valve fromremaining in any intermediate position. f

9. In a fuel supply valve having inlet and outlet openings therein, avalve for metering the flowof fuel through said openings, a second valvenormally urged to closed position and maintained open by said meteringvalve, said second valve remaining in full open position until saidmetering valve is closed past a predetermined safe minimum fuel nowposition, said second valve being then positively closed.

10. In a valve having inlet and outlet openings therein, a valve memberfor said inlet opening, a second valve member for` said outlet opening,means on Asaid rst valve member operable after a predetermined movementthereof for opening said second valve member from closed position vtofull open position, and spring means cooperating with said last namedmeans for preventing said second valve member from remaining in anyintermediate position.

11. In combination, a fluid conduit, rotatable valve means in saidconduit, normally closed secondary valve means in said conduit posteriorto said rotatable valve means, and means actuatable only after apredetermined minimum opening movement of said rotatable valve means formoving said secondary valve means from closed position into full openposition.

maniera.

